CN217181833U

CN217181833U - Cross-linked polyethylene insulated medium-voltage cable

Info

Publication number: CN217181833U
Application number: CN202220409937.4U
Authority: CN
Inventors: 宗铭; 谈亮; 徐国新; 刘云昌
Original assignee: JIANGSU HONGXIANG CABLE CO Ltd
Current assignee: JIANGSU HONGXIANG CABLE CO Ltd
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2022-08-12
Anticipated expiration: 2032-02-28

Abstract

The utility model discloses an insulating medium voltage cable of crosslinked polyethylene relates to medium voltage cable technical field, and for solving current medium voltage cable, the performance that has its insulating cover is relatively poor, leads to the cable service life not long enough to appear at the in-process that uses, and incremental cost's problem. The cable junction base is provided with the base No. one, the one end of base is provided with the connector No. one, the other end of base is provided with the connection tail, be provided with the screw thread on the connection tail, be provided with the installation extension pipe in the connector No. one, be provided with the sleeve pipe on the installation extension pipe, be provided with the middling pressure cable component in the connection tail, be provided with the base No. two on the cable junction base No. two, the one end of base No. two is provided with the connector No. two, be provided with the lock pin base on the connector No. two.

Description

Cross-linked polyethylene insulated medium-voltage cable

Technical Field

The utility model relates to a medium voltage cable technical field specifically is an insulating medium voltage cable of crosslinked polyethylene.

Background

The power cable is used for transmitting and distributing electric energy, is commonly used for urban underground power grids, power station leading-out lines, power supply in industrial and mining and transmission lines under river-crossing seawater, the proportion of the cable in the power line is gradually increased, and the medium-voltage cable is a power cable with the use voltage range between 6kV and 33 kV.

However, the existing medium-voltage cable has the problems that the service performance of the insulating sleeve of the existing medium-voltage cable is poor, so that the service life of the cable is not long enough in the using process of the cable, and the cost is increased; thus, the existing need is not met, for which we propose a crosslinked polyethylene insulated medium voltage cable.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an insulating medium voltage cable of crosslinked polyethylene to solve the current medium voltage cable that proposes in the above-mentioned background art, it is relatively poor to have the performance of its insulating cover, leads to the cable service life not long enough to appear in the in-process that uses, and incremental cost's problem.

In order to achieve the above object, the utility model provides a following technical scheme: a crosslinked polyethylene insulated medium-voltage cable comprises a first cable connection base and a second cable connection base, wherein the first cable connection base is provided with a first base, one end of the first base is provided with a first connector, the first connector and one end of the first base are integrally formed, the other end of the first base is provided with a connection tail, the connection tail and the other end of the first base are integrally formed, the connection tail is provided with threads, the first connector is internally provided with an installation extension pipe, the installation extension pipe is embedded and inserted and connected with the first connector, the installation extension pipe is provided with a sleeve pipe, the sleeve pipe is embedded and connected with the installation extension pipe, the connection tail is internally provided with a medium-voltage cable component, the medium-voltage cable component is embedded and inserted and connected with the connection tail, the second cable connection base is arranged on the second cable connection base, the one end of No. two bases is provided with the connector No. two, and the one end of No. two connectors and No. two bases is integrated into one piece, be provided with the lock pin base on No. two connectors, and lock pin base and No. two connectors are integrated into one piece.

Preferably, the surface of the shell of the medium voltage cable component is provided with a compression-resistant structure strip, and the compression-resistant structure strip and the shell of the medium voltage cable component are integrally formed.

Preferably, a wear-resistant layer is arranged in an interlayer of a shell of the medium-voltage cable member, a first armor strip is arranged in an interlayer of the wear-resistant layer, the first armor strip is connected with the interlayer of the wear-resistant layer in an embedded mode, a flame-retardant layer is arranged below a lining of the wear-resistant layer, and the flame-retardant layer is connected with the wear-resistant layer in an embedded mode.

Preferably, a cross-linked insulating layer is arranged below the lining of the flame-retardant layer and is in nested connection with the flame-retardant layer, and a water-resistant layer is arranged below the lining of the cross-linked insulating layer and is in nested connection with the cross-linked insulating layer.

Preferably, an inner core segmented armor structure is arranged inside the medium-voltage cable component, the inner core segmented armor structure is connected with the inside of the medium-voltage cable component in a nested mode, and inner core fillers are arranged in the segmentation lattices of the inner core segmented armor structure.

Preferably, a loose tube is arranged in the inner core filler and is in nested connection with the medium-voltage cable component, a conductor filler is arranged in the loose tube, a conductor is arranged in the conductor filler, and the conductor is in nested connection with the loose tube.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a crosslinked insulation layer, the water blocking layer, the setting on fire-retardant layer, crosslinked insulation layer adopts the polyethylene that has insulating ability as the insulating layer, carry out the crosslinked processing with polyethylene again in addition, after carrying out the crosslinked processing, polyethylene as the insulating layer has just had good heat resistance, performance such as mechanical properties, the water blocking layer can effectively resist the erosion damage of rainwater to the cable, fire-retardant layer can restrict the burning of flame to the cable in local range, do not produce and stretch, keep other various equipment, avoid causing bigger loss.

2. Through the setting of compression-resistant structure strip, wearing layer, first armor strip, inner core division armor structure, the compression-resistant structure strip that sets up on the shell of cable is the compressive capacity of reinforcing cable, and the wearing layer that sets up in the shell intermediate layer makes the wear resistance of cable improve, and the first armor strip of cable and the inner core division armor structure twice armor of inner core can play the dual reinforcing to cable service strength in addition.

Drawings

Fig. 1 is a schematic structural view of a first cable connection base of the present invention;

FIG. 2 is a schematic structural view of a second cable connection base according to the present invention;

fig. 3 is a schematic cross-sectional structure view of a medium voltage cable component according to the present invention;

in the figure: 1. a first cable connecting base; 2. a second cable connecting base; 3. a first base; 4. a first connector; 5. connecting the tail end; 6. a thread; 7. installing an extension pipe; 8. a sleeve; 9. a medium voltage cable member; 10. a second base; 11. a second connector; 12. a ferrule base; 13. a compression resistant structural strip; 14. a wear layer; 15. a first armor strip; 16. a flame retardant layer; 17. crosslinking the insulating layer; 18. a water resistant layer; 19. the inner core divides the armor structure; 20. an inner core filler; 21. loosening the sleeve; 22. a conductor filler; 23. a conductor.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, the present invention provides an embodiment: a crosslinked polyethylene insulated medium-voltage cable comprises a first cable connection base 1 and a second cable connection base 2, wherein the first cable connection base 1 is provided with a first base 3, one end of the first base 3 is provided with a first connector 4, the first connector 4 and one end of the first base 3 are integrally formed, the other end of the first base 3 is provided with a connection tail 5, the connection tail 5 and the other end of the first base 3 are integrally formed, the connection tail 5 is provided with a thread 6, the first connector 4 is internally provided with an installation extension pipe 7, the installation extension pipe 7 is embedded and inserted and connected with the first connector 4, the installation extension pipe 7 is provided with a sleeve 8, the sleeve 8 is embedded and connected with the installation extension pipe 7, the connection tail 5 is internally provided with a medium-voltage cable component 9, the medium-voltage cable component 9 is embedded and inserted and connected with the connection tail 5, the second cable connection base 2 is provided with a second base 10, the one end of No. two bases 10 is provided with No. two connectors 11, and No. two connectors 11 and No. two bases 10's one end be integrated into one piece, is provided with lock pin base 12 on No. two connectors 11, and lock pin base 12 and No. two connectors 11 are integrated into one piece.

Further, the surface of the shell of the medium voltage cable member 9 is provided with a pressure-resistant structure strip 13, the pressure-resistant structure strip 13 and the shell of the medium voltage cable member 9 are integrally formed, and the pressure-resistant structure strip 13 improves the pressure-resistant capacity of the cable.

Further, be provided with wearing layer 14 in the shell intermediate layer of middling pressure cable member 9, be provided with first armor strip 15 in wearing layer 14's the intermediate layer, and embedded the being connected of the intermediate layer of first armor strip 15 and wearing layer 14, be provided with fire-retardant layer 16 under wearing layer 14's the inside lining, and fire-retardant layer 16 and wearing layer 14 nested joint, wearing layer 14 does benefit to the wear resistance who improves the cable, first armor strip 15 does benefit to the intensity that improves the cable, fire-retardant layer 16 does benefit to the ability of improving the resistance of cable to open fire.

Further, a cross-linked insulating layer 17 is arranged below the lining of the flame-retardant layer 16, the cross-linked insulating layer 17 is connected with the flame-retardant layer 16 in a nested mode, a water-resistant layer 18 is arranged below the lining of the cross-linked insulating layer 17, the water-resistant layer 18 is connected with the cross-linked insulating layer 17 in a nested mode, the cross-linked insulating layer 17 is used for insulating cables, and the water-resistant layer 18 is used for improving the resistance of the cables to rainwater.

Further, an inner core segmented armor structure 19 is arranged inside the medium-voltage cable component 9, the inner core segmented armor structure 19 is connected with the inside of the medium-voltage cable component 9 in a nested mode, inner core fillers 20 are arranged in the segmented lattices of the inner core segmented armor structure 19, the inner core segmented armor structure 19 is used for improving the strength of the cable, and the inner core fillers 20 play a role in protection on one hand and are used for insulation on the other hand.

Further, a loose tube 21 is arranged in the core filler 20, the loose tube 21 is nested with the medium voltage cable member 9, a conductor filler 22 is arranged in the loose tube 21, a conductor 23 is arranged in the conductor filler 22, the conductor 23 is nested with the loose tube 21, the loose tube 21 is used for bundling, the conductor filler 22 is used for insulation between the stranded conductors 23, and the conductor 23 is used for transmission.

The working principle is as follows: during the use, at first with cable junction base 1 and two cable junction base 2's two bases of cable junction base 1 and two that are connected with medium voltage cable component 9 inlay mutually and insert, accomplish the connection, the compressive structure strip 13 on cable surface has improved the compressive capacity of cable, the service strength of 19 two armor reinforcing cables of armor structure is cut apart with the inner core to first armor strip 15, the service life of extension cable, crosslinked insulating layer 17 and water blocking layer 18 play the insulating and the waterproof ability of reinforcing cable respectively in addition, loose sleeve 21 is tied together stranded conductor 23 at last, be convenient for become the cable.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides an insulating medium voltage cable of crosslinked polyethylene, includes a cable junction base (1), No. two cable junction bases (2), its characterized in that: the cable connecting base (1) is provided with a first base (3), one end of the first base (3) is provided with a first connector (4), the first connector (4) and one end of the first base (3) are integrally formed, the other end of the first base (3) is provided with a connecting tail (5), the connecting tail (5) and the other end of the first base (3) are integrally formed, the connecting tail (5) is provided with a thread (6), the first connector (4) is internally provided with an installation extension pipe (7), the installation extension pipe (7) and the first connector (4) are embedded and connected, the installation extension pipe (7) is provided with a sleeve (8), the sleeve (8) and the installation extension pipe (7) are embedded and connected, the connecting tail (5) is internally provided with a medium-voltage cable component (9), and the medium-voltage cable component (9) and the connecting tail (5) are embedded and connected, be provided with No. two base (10) on No. two cable junction bases (2), the one end of No. two base (10) is provided with No. two connectors (11), and No. two connectors (11) and the one end of No. two base (10) be integrated into one piece, be provided with lock pin base (12) on No. two connectors (11), and lock pin base (12) and No. two connectors (11) be integrated into one piece.

2. A cross-linked polyethylene insulated medium voltage cable according to claim 1, characterized in that: the surface of the shell of the medium-voltage cable component (9) is provided with a pressure-resistant structure strip (13), and the pressure-resistant structure strip (13) and the shell of the medium-voltage cable component (9) are integrally formed.

3. A cross-linked polyethylene insulated medium voltage cable according to claim 1, characterized in that: the cable is characterized in that a wear-resistant layer (14) is arranged in an interlayer of a shell of the medium-voltage cable component (9), a first armor strip (15) is arranged in the interlayer of the wear-resistant layer (14), the first armor strip (15) is connected with the interlayer of the wear-resistant layer (14) in an embedded mode, a flame-retardant layer (16) is arranged below a lining of the wear-resistant layer (14), and the flame-retardant layer (16) is connected with the wear-resistant layer (14) in an embedded mode.

4. A cross-linked polyethylene insulated medium voltage cable according to claim 3, characterized in that: a cross-linked insulating layer (17) is arranged under the lining of the flame-retardant layer (16), the cross-linked insulating layer (17) is connected with the flame-retardant layer (16) in a nested manner, a water-resistant layer (18) is arranged under the lining of the cross-linked insulating layer (17), and the water-resistant layer (18) is connected with the cross-linked insulating layer (17) in a nested manner.

5. A cross-linked polyethylene insulated medium voltage cable according to claim 1, characterized in that: an inner core division armored structure (19) is arranged inside the medium-voltage cable component (9), the inner core division armored structure (19) is connected with the inside of the medium-voltage cable component (9) in a nested mode, and inner core fillers (20) are arranged in division grids of the inner core division armored structure (19).

6. A cross-linked polyethylene insulated medium voltage cable according to claim 5, characterized in that: the cable comprises an inner core filler (20), a loose tube (21) is arranged in the inner core filler (20), the loose tube (21) is connected with a medium-voltage cable component (9) in a nested mode, a conductor filler (22) is arranged in the loose tube (21), a conductor (23) is arranged in the conductor filler (22), and the conductor (23) is connected with the loose tube (21) in a nested mode.